If we would just ease up the permit process to liquefy and ship natural gas to Europe, we could crush Russia without ever firing a shot.
We could also help by giving European nations money to aid in developing the infrastructure to unload the natural gas at their port/pipeline facilities.
Oil and natural gas is where Russia makes all its foreign currency. If you lower the value of oil and gas we could collapse them just like we did in the eighties. The nice side effect would be hurting OPEC to. We could also crush Venezuela.
I remember seeing a map of the Ukraine and all the piplines going through there frome Russia a cople of weeks back.